21291239650

素因数分解:

$2^1\times 5^2\times {\mathrm{113}}^1\times {\mathrm{661}}^1\times {\mathrm{5701}}^1$

素因数の和:6487

約数の個数: 48

約数和(自身を含む): 40019623848

約数和(自身を除く): 18728384198

約数列:

[1, 2, 5, 10, 25, 50, 113, 226, 565, 661, 1130, 1322, 2825, 3305, 5650, 5701, 6610, 11402, 16525, 28505, 33050, 57010, 74693, 142525, 149386, 285050, 373465, 644213, 746930, 1288426, 1867325, 3221065, 3734650, 3768361, 6442130, 7536722, 16105325, 18841805, 32210650, 37683610, 94209025, 188418050, 425824793, 851649586, 2129123965, 4258247930, 10645619825, 21291239650]

約数ペア:

[(1, 21291239650), (2, 10645619825), (5, 4258247930), (10, 2129123965), (25, 851649586), (50, 425824793), (113, 188418050), (226, 94209025), (565, 37683610), (661, 32210650), (1130, 18841805), (1322, 16105325), (2825, 7536722), (3305, 6442130), (5650, 3768361), (5701, 3734650), (6610, 3221065), (11402, 1867325), (16525, 1288426), (28505, 746930), (33050, 644213), (57010, 373465), (74693, 285050), (142525, 149386)]